I haven't told anyone this yet.

Meaning

Indicates the information's novelty and private nature.

Examples

• John: What's that you're smiling about?
• Alice: <b>I haven't told anyone this yet</b>, but I got engaged!
• John: No way! Congratulations! Tell me everything!
• Alice: It's still very early days, but I'm so happy, <b>I haven't told anyone this yet</b> except you.